Small style fixes

client/src/components/graphs/BarChart/bar-chart.scss

@@ -46,8 +46,8 @@
             left: 50%;
             transform: translate(-50%, -75%);
             padding: 10px;
-            background: s.$background-white;
-            color: s.$text;
+            background: s.$white;
+            color: s.$black;
             border-radius: 5px;
             display: block;
             visibility: hidden;

client/src/components/navigation/Sidebar/sidebar.scss

@@ -145,11 +145,12 @@
                 &:before,
                 &:after {
                     opacity: 0.15;
+                    background: s.$white;
                 }
             }
 
             .bar {
-                background: s.$background-white;
+                background: s.$white;
             }
         }
     }